What Can I Do If NCE Does Not Receive Alarms from NEs

Hello friend,
if NCE does not receive alarms from NEs, please check:
1. the network beteween NCE and OLTs
2. the NE snmp trap configuration refer to the OLT product document link:

https://support.huawei.com/hedex/hdx.do?docid=EDOC1100144339&id=EN-US_TASK_0248173176&lang=en 

huawei(config)#snmp-agent target-host trap-hostname test0001 address 10.10.1.10 trap-paramsname ABC

or you can refer to the pots I send before:https://forum.huawei.com/enterprise/en/securityname-wrong-cause-olt-fails-to-report-alarms-to-the-nms/thread/680053-100181

3. the NCE Trap Parameters Setting refer to the NCE product document link:
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100105635&id=EN-US_TOPIC_0158660231&lang=en

thanks.